+1 vote
in Environmental Engineering by (81.4k points)
Which of the following is the pure compound?

(a) Sodium fluoride

(b) Sodium silico fluoride

(c) Hydrofluosilicic  acid

(d) Sodium fluro carbonate

I got this question during an interview.

I would like to ask this question from Fluoridation and Defluoridation in division Miscellaneous Treatment Methods of Environmental Engineering

1 Answer

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Best answer
Right answer is (a) Sodium fluoride

To elaborate: Sodium fluoride is the most purest compound having 95-98% purity due to which, they are commonly used for fluoridation.

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